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A206705 Number of Hadamard matrices of order n that are equivalent to their transpose. 1
1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 3, 0, 0, 0, 12, 0, 0, 0, 101, 0, 0, 0, 3993, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,16
COMMENTS
Number of equivalence classes under row/column permutation and negation that contain the transpose.
LINKS
CROSSREFS
Sequence in context: A174428 A308347 A090225 * A285014 A219551 A200221
KEYWORD
nonn
AUTHOR
Brendan McKay, Feb 11 2012
STATUS
approved

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Last modified June 6 12:26 EDT 2024. Contains 373128 sequences. (Running on oeis4.)